surrealdb-sql 3.3.1

A scalable, distributed, collaborative, document-graph database, for the realtime web
Documentation 
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use common::fmt::QuoteStr;
use surrealdb_types::{SqlFormat, ToSql, write_sql};

use super::AlterKind;
use crate::reference::Reference;
use crate::{CoverStmts, Expr, FieldPermissions, Kind, Literal, Permissions};

#[derive(Clone, Debug, Default, Eq, PartialEq)]
#[cfg_attr(feature = "arbitrary", derive(arbitrary::Arbitrary))]
pub enum AlterDefault {
	#[default]
	None,
	Drop,
	Always(Expr),
	Set(Expr),
}

#[derive(Clone, Debug, Eq, PartialEq)]
#[cfg_attr(feature = "arbitrary", derive(arbitrary::Arbitrary))]
pub struct AlterFieldStatement {
	pub name: Expr,
	pub what: Expr,
	pub if_exists: bool,
	pub kind: AlterKind<Kind>,
	pub flexible: AlterKind<()>,
	pub readonly: AlterKind<()>,
	/// Set or drop the `INLINE` clause.
	pub inline: AlterKind<()>,
	pub value: AlterKind<Expr>,
	pub assert: AlterKind<Expr>,
	pub default: AlterDefault,
	pub permissions: Option<Permissions>,
	pub comment: AlterKind<String>,
	pub reference: AlterKind<Reference>,
}

impl Default for AlterFieldStatement {
	fn default() -> Self {
		Self {
			name: Expr::Literal(Literal::None),
			what: Expr::Literal(Literal::None),
			if_exists: false,
			kind: AlterKind::None,
			flexible: AlterKind::None,
			readonly: AlterKind::None,
			inline: AlterKind::None,
			value: AlterKind::None,
			assert: AlterKind::None,
			default: AlterDefault::None,
			permissions: None,
			comment: AlterKind::None,
			reference: AlterKind::None,
		}
	}
}

impl ToSql for AlterFieldStatement {
	fn fmt_sql(&self, f: &mut String, fmt: SqlFormat) {
		write_sql!(f, fmt, "ALTER FIELD");
		if self.if_exists {
			write_sql!(f, fmt, " IF EXISTS");
		}
		write_sql!(f, fmt, " {} ON {}", CoverStmts(&self.name), CoverStmts(&self.what));
		match self.kind {
			AlterKind::Set(ref x) => write_sql!(f, fmt, " TYPE {x}"),
			AlterKind::Drop => write_sql!(f, fmt, " DROP TYPE"),
			AlterKind::None => {}
		}
		match self.flexible {
			AlterKind::Set(_) => write_sql!(f, fmt, " FLEXIBLE"),
			AlterKind::Drop => write_sql!(f, fmt, " DROP FLEXIBLE"),
			AlterKind::None => {}
		}
		match self.readonly {
			AlterKind::Set(_) => write_sql!(f, fmt, " READONLY"),
			AlterKind::Drop => write_sql!(f, fmt, " DROP READONLY"),
			AlterKind::None => {}
		}
		match self.inline {
			AlterKind::Set(_) => write_sql!(f, fmt, " INLINE"),
			AlterKind::Drop => write_sql!(f, fmt, " DROP INLINE"),
			AlterKind::None => {}
		}
		match self.value {
			AlterKind::Set(ref x) => write_sql!(f, fmt, " VALUE {}", CoverStmts(x)),
			AlterKind::Drop => write_sql!(f, fmt, " DROP VALUE"),
			AlterKind::None => {}
		}
		match self.assert {
			AlterKind::Set(ref x) => write_sql!(f, fmt, " ASSERT {}", CoverStmts(x)),
			AlterKind::Drop => write_sql!(f, fmt, " DROP ASSERT"),
			AlterKind::None => {}
		}

		match self.default {
			AlterDefault::None => {}
			AlterDefault::Drop => write_sql!(f, fmt, " DROP DEFAULT"),
			AlterDefault::Always(ref d) => write_sql!(f, fmt, " DEFAULT ALWAYS {}", CoverStmts(d)),
			AlterDefault::Set(ref d) => write_sql!(f, fmt, " DEFAULT {}", CoverStmts(d)),
		}

		if let Some(permissions) = &self.permissions {
			write_sql!(f, fmt, " {}", FieldPermissions(permissions));
		}

		match self.comment {
			AlterKind::Set(ref x) => write_sql!(f, fmt, " COMMENT {}", QuoteStr(x)),
			AlterKind::Drop => write_sql!(f, fmt, " DROP COMMENT"),
			AlterKind::None => {}
		}
		match self.reference {
			AlterKind::Set(ref x) => write_sql!(f, fmt, " REFERENCE {x}"),
			AlterKind::Drop => write_sql!(f, fmt, " DROP REFERENCE"),
			AlterKind::None => {}
		}
	}
}